Default [Q] How to root/Back up TA Since the Guide is mangled?

About what it says on the tin; Since the new users guide is currently mangled since the mods removed the questionable software links, I'm unsure how to root the thing (Not that I can right now, but I should get it sometime today if UPS will get it's **** together).

Also, two tangents but slightly related; I know we need to backup the TA partition to retain the installed DRM keys, but what exactly do those DRM keys do?

And, I noticed Omni ROM now includes a Build.prop update to their install that fixes the data issues; I've never updated a build before, so just to clairify, all I do is replace the Build.prop in that folder in the .ZIP file, right?